<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0",

    maximum-scale="1.0",minimum-scale="1.0",user-scalable="no" >
       <!-- 加三个上面 -->
        <title>Document</title>
        <style>
            a{
                /* 去高光 */
            -webkit-tap-highlight-color: transparent;
            outline: none;
            /* 禁止长按时弹出菜单 */
            -webkit-touch-callout: none;
            }
            input{
                /* 去掉按钮样式 */
                appearance: none;
            }

        </style>
</head>
<body>
    嘎嘎啦嘎啦
    <a href="">jjj</a>
    <input type="button" value="login">
</body>
</html>